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UK domestic energy supplier

Scottish Power UK

Founded in 1990 in Glasgow, Scottish Power is a Big Six UK supplier and the British arm of Spanish energy giant Iberdrola. It supplies gas and 100% renewable electricity to about 3 million households. Compare current tariffs, customer service, complaints and ownership below.

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Founded 1990 About 3 million households Glasgow Big Six member

Founded

1990

Years on the UK market

Customers

About 3 million households

Households served

About

Who is Scottish Power?

Registered as Scottish Power Energy Retail Ltd, Scottish Power uses this legal name for Ofgem licence filings, contracts and any formal communications. The trading name customers see on bills is the shorter, more recognisable form.

The company is headquartered in Glasgow, where it runs its senior management, customer operations and regulatory liaison with Ofgem.

Scottish Power was established in 1990. A longer track record means more years operating under Ofgem rules and a wider history of customer feedback, billing systems and regulatory interactions.

Scottish Power is part of the Iberdrola (Spain) group, which provides shared governance, financial backing and a broader pool of expertise in trading, hedging and regulatory work.

The company is regulated by Ofgem, the UK's energy regulator, and its complaint handling falls under the Energy Ombudsman alternative dispute resolution scheme.

Fuel mix

Scottish Power electricity fuel mix (2025)

Scottish Power was the first UK vertically integrated power company to renounce fossil-fuel generation (it sold its remaining gas, coal and hydro plants to Drax for £702 million in 2018). Every domestic electricity tariff is now backed by Renewable Energy Guarantees of Origin (REGOs), the bulk of them generated by the ScottishPower Renewables wind portfolio.

  • Renewable 100%
  • Nuclear 0%
  • Natural gas 0%
  • Coal 0%
  • Other 0%

Current tariffs

Scottish Power tariffs: as of 14 May 2026

Scottish Power is a fully Ofgem-licensed domestic supplier, so its Standard Variable Tariff is capped quarterly by the Ofgem Energy Price Cap. The Cap Tracker sits a guaranteed amount below the cap on standing charges (around £7.50 per fuel per year) with no exit fee. Fixed and EV Saver tariffs sit outside the cap and can be cheaper or more expensive than the Standard headline rate depending on wholesale prices. Rates below are the Q2 2026 Ofgem-cap direct-debit averages across England, Scotland and Wales (incl. VAT). Your real rate depends on your distribution region.

Scottish Power domestic and business tariff unit rates as of 14 May 2026
Tariff Type Unit rate

Standard Variable Tariff

The default tariff for every new and migrated Scottish Power customer. Capped quarterly by the Ofgem Energy Price Cap, no fixed term, no exit fee. 100% renewable electricity by REG...

Term: No fixed term · no exit fee

Variable 5.74 p / kWh

Cap Tracker

Variable tariff that tracks the Ofgem cap on unit rates but locks in a daily standing charge that is the equivalent of around £7.50 per fuel per year cheaper than the Standard tari...

Term: 12 months, no exit fee · no exit fee

Variable 5.74 p / kWh

1-Year Fixed (May 2026)

Standard 12-month fixed-price tariff. Locks in unit rate and standing charge for the full year on both fuels. £50 per-fuel exit fee outside the final 49 days of the contract. 100%...

Term: 12 months · exit fee £50/fuel

Fixed 5.55 p / kWh

Green Fixed (Aug 2026)

Branded green fixed deal. 100% renewable electricity backed by REGO and 12 months of Boiler Insurance bundled in at £4.50 per month for parts, labour and annual service. £50 per-fu...

Term: 12 months · exit fee £50/fuel

Fixed 5.65 p / kWh

EV Saver

Two-rate EV tariff for households with a SMETS2 single-rate smart meter that sends half-hourly readings. Cheap overnight window of 8.50 p/kWh from 00:00 to 05:00 covers home chargi...

Term: 12 months · exit fee £50/fuel

Fixed · EV time-of-use 5.74 p / kWh

EV Optimise (smart-charging add-on)

Smart-charging add-on, not a stand-alone tariff. Pays a flat 8.00 p/kWh for every kWh used by the EV when Scottish Power schedules the charge inside the off-peak window via your el...

Term: 12 months, runs alongside an existing tariff · no exit fee

Add-on · smart EV charging 8.00 p / kWh
Open the full Scottish Power tariffs page

Regulator

Who regulates Scottish Power?

Independent watchdog responsible for licences, price approvals and customer-protection rules.

Licence
Ofgem-licensed gas and electricity supplier (Scottish Power Energy Retail Ltd)
Complaints escalation (ADR)
Energy Ombudsman

If Scottish Power does not resolve your complaint within eight weeks (or issues a deadlock letter sooner), you can refer it free of charge to the Energy Ombudsman. The Ombudsman's decision is binding on the supplier.

Companies House
04094290

Timeline

Scottish Power — key dates

A short timeline of the Scottish Power brand — founding, milestones, regulatory events.

  1. 1990

    Scottish Power is formed during the privatisation of the Scottish electricity industry, primarily from the South of Scotland Electricity Board.

  2. 1998

    Begins supplying electricity across the UK following deregulation.

  3. 2006

    Spanish energy giant Iberdrola acquires Scottish Power for £11.6 billion.

  4. 2015

    Ofgem fines Scottish Power £18 million for poor customer service and complaint handling — the largest such penalty at the time.

  5. 2018

    Scottish Power becomes the first UK vertically integrated power company to renounce fossil-fuel generation, selling its remaining gas, coal and pumped-hydro assets to Drax for £702 million. Domestic electricity supply moves to 100% REGO-backed renewable.

  6. 2018

    Ofgem opens a follow-up investigation into Scottish Power customer-service practices.

  7. 2024

    Scottish Power continues as one of the Big Six suppliers, with a focus on renewable generation through its sister company ScottishPower Renewables.

  8. 2026

    East Anglia THREE offshore wind farm (1.4 GW, sized to power up to 1.3 million homes) is commissioned. Iberdrola announces plans to invest £30 billion in the UK by the end of the decade.

Where the energy comes from

Scottish Power generation portfolio

Scottish Power's sister company ScottishPower Renewables owns one of the largest renewable-generation portfolios in the UK. Every kWh of domestic electricity Scottish Power sells is matched on an annual basis by a Renewable Energy Guarantee of Origin (REGO), most of them issued against the wind assets listed below.

40+

Wind farm sites

Operational across the UK

2,800 MW

Installed capacity

As of 2026

5 GW

Target by 2028

Combined onshore + offshore

£30bn

Iberdrola UK plan

Investment by end of decade

Scottish Power owned generation assets and partner generators
Asset Technology
East Anglia ONE Offshore wind
East Anglia THREE Offshore wind
Whitelee Onshore wind
Arecleoch Onshore wind (repower)
Kilgallioch Onshore wind (repower)
West of Duddon Sands Offshore wind
Beinneun Onshore wind
Cruachan Pumped Storage Pumped-storage hydro (sister Drax site, 2018)

Source: ScottishPower Renewables, Iberdrola UK and Ofgem Renewables Obligation Register, May 2026. The East Anglia Hub (East Anglia ONE, TWO, THREE and ONE North) is on track to reach a combined 3.9 GW by the late 2020s, enough to power around 2.7 million UK homes.

Recognition

Scottish Power awards & accreditations

Independent badges that tell you whether a supplier walks the talk on price, service and sustainability.

Citizens Advice — joint 1st for Ease of Contact

Q4 2025

Scored joint top among the large UK domestic suppliers for ease-of-contact / call-wait performance in the Citizens Advice supplier-performance table (release dated March 2026).

Energy UK Vulnerability Commitment

Member

Signatory to the Energy UK Vulnerability Commitment, scoring 5 of 5 in the Citizens Advice supplier-performance scorecard for vulnerable-customer protections.

Energy Switch Guarantee

Member

Signatory to the Energy Switch Guarantee — five working days, no interruption to supply, final bill within six weeks.

100% Renewable Electricity

Since 2018

First UK vertically integrated supplier to renounce fossil-fuel generation. All domestic electricity tariffs are 100% REGO-backed.

Trustpilot Excellent (4.3 / 5)

May 2026

Around 180,000 published Trustpilot reviews, the largest UK Big Six review volume on the platform alongside British Gas and E.ON Next.

East Anglia THREE — UK offshore wind

Commissioning 2026

1.4 GW Iberdrola / Scottish Power offshore wind farm coming on stream during 2026. Sized to power up to 1.3 million UK homes.

Customer service

How to reach Scottish Power in 30 seconds

The lines you actually need on speed-dial. Every other line (Welsh, Relay UK, business switching, bereavement) is on the full contact page.

Home customers

0800 027 0072

Mon-Fri 8 a.m. - 8 p.m.; Sat 8:40 a.m. - 4 p.m.

Gas emergency

0800 111 999

National Gas Emergency line, 24/7, free

Boiler / HomeComfort breakdown

0800 111 4686

24/7, free to call

Open the full Scottish Power contact directory

Customer portal

Log in to YourEnergy account

Your Scottish Power online account, view bills, submit meter readings, switch tariffs and manage your direct debit.

YourEnergy account

The web portal that holds your Scottish Power account: bills, meter readings, tariff changes, paperless settings.

What you can do once logged in

  • View, download and pay bills, including the last 24 months of statements.
  • Submit gas and electricity meter readings and check the next scheduled bill date.
  • Increase, decrease or pause your monthly direct debit, and switch between fixed and variable amounts.
  • Switch between Scottish Power tariffs (Cap Tracker, Fixed, EV Saver) and view exit-fee status.
  • Track smart-meter half-hourly usage data once a SMETS2 meter is paired and reading.
  • Apply for the Warm Home Discount, Hardship Fund and Priority Services Register without phoning.
Open YourEnergy account Sign up
Save up to £300 per year
Independent comparison

Is Scottish Power the cheapest option for your home?

UK households can save up to £300 per year by switching to a supplier whose tariffs fit their actual gas + electricity usage. Compare against suppliers regulated by Ofgem in under two minutes.

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Common questions

Scottish Power — frequently asked questions

Scottish Power is regulated by Ofgem and operates under a standard domestic-supply licence. Whether it is the right supplier for your household depends on your unit rate, standing charge, customer-service rating and any add-on services (HomeCare, Warm Home Discount eligibility). Always quote your annual kWh consumption when comparing prices — the headline rate alone does not predict your bill.

Switching to Scottish Power takes about five working days under the new Faster Switching service, and your supply is never interrupted. Sign up online with your address, postcode and a recent meter reading. Scottish Power will arrange the transfer with your current supplier, including the final meter reading and the closing bill.

The UK grid is supplied by a mix of gas, nuclear, wind, solar, biomass and imports. Scottish Power declares its fuel mix annually under Ofgem rules — see the fuel-mix section above for the current figures. Some tariffs are sold as 'green' or '100% renewable', which means the supplier matches your annual consumption with renewable electricity certificates (REGOs) rather than physically delivering renewable electrons to your home.

Most UK fixed-term tariffs include an exit fee (typically £25-£75 per fuel) if you switch before the contract ends. You can switch without an exit fee in the last 49 days of your contract. Variable tariffs (including the default tariff capped by the Energy Price Cap) have no exit fees.

You can reach Scottish Power on 0800 027 0072, Mon-Fri 8 a.m. to 8 p.m.; Sat 8:40 a.m. to 4 p.m. (free). For a full breakdown of phone lines (emergency, prepayment, HomeCare, bereavement, Welsh, Relay UK), see the Scottish Power contact page.

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